Using several beam energies, plot the data and make a fit to Bortfeld's range
equation parameters. Calculate the energy required to position the Bragg peak at 30 cm depth?
Show your calculation. Hint: See the paper from Thomas Bortfeld and Wolfgang Schlegel 1996
Phys. Med. Biol. 41 1331, which is supplied with the assignment.
Show the graph of your fit (energy vs range, measurement and your parameters of Bortfeld
equation). Describe the calculation method and discuss the parameters.